Some viruses can enter cells by first attaching to the cell membrane. the flu virus targets and attaches to the cells of the nose and mouth. the hepatitis virus targets only specific cells of the liver. state one way the immune system reacts when one of these viruses enters the body ?

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

What tool do geneticists use to predict the outcome of genetic crosses? a.karyotype b.punnett square c.centrifuge